This project was inspired by the Make Weekend Project (Mini Fume Extractor)http://www.youtube.com/watch?v=klTfk6L7o6oThe circuit is wired just the same as the "Mini Fume Extractor" Weekend Project.I just modified the project by taking the "mini" and making it a little larger. I used a bigger enclosure (Radio Shack Project box) instead of a mint tin, a bigger computer biscuit fan, and a push button switch.